Hi Brian, you can in theory make the repair look almost like new if it's just the edge. Whether you want to take this amount of trouble I don't know but but here goes. Degrease the damage with a cleaner, I've used Surface Cleaner in an aerosol from Halfords on a paper towel and then touch up the edge with a primer touch-up. It will be easier to use a proper artists brush with a single stroke up the edge, not across (so it's not in blobs). You could also very carefully mask off the edge just exposing the damage. Put a few coats on and leave for a day or so. You'll then need some thinners, cellulose or a substitue will work. Put a small amount on a paper towel (wear some gloves) and wipe over where you put the primer very gently either up or down, one or possibly two wipes may do you don't want to take it all off. When it's reasonably smooth, put the coloured base coat on and go through the same process. If it's metallic don't wipe the last coat. Apply the lacquer now with the artists brush and when fully dry you can smooth it a bit with thinners very lightly but then cut back with T Cut. It should be looking reasonable by now. If it isn't you can always remove some or all of it with thinner and continue or you could gently use some P800 wet/dry probably on a small block used wet, protect existing good paint with masking tape. Remove tape and carefully add a coat of colour followed by laquer as before and cut back/polish with T Cut. You should end up with it looking significantly better if not almost perfect.
The Chipex kit as Colin mentions, does something very similar but you don't need to go to the expense of their kit on an edge like this unless the your touch up colour match is really a long way out.